Mckenna's mum told BuzzFeed News: "Jon goes to every doctor's appointment, every blood test, every surgery, every radiation. And, as you can see, if he can't be by my side he is as close as he can get!"

Needless to say, Twitter can't handle it.

@mackenna_newman Amazing...may she heal soon. My heart goes out to you and your family. Stay strong you have an amazing Dad.